When I was a teenager (like 14 or 15) my friend's dad got in a fight with a guy who was beating his wife in their apartment complex. He was a professional masseur, and he took him down with a back heel, mounted the guy, and started prodding and gouging pressure points while the guy wiggled in pain. It helped that he was a huge guy with some of the strongest hands ever and he worked on people for a living.

He actually died of cancer about a year ago. I actually had him come to an informal sparring session with various martial artists once. He had a background in some Japanese jujutsu, but mostly he was a big strong guy who knew a whole lot about what hurts the human body. It would've been cool if he did more martial arts training and shared his perspective on pressure points and such (even if I couldn't really make it work for me).

CLICK & WATCH: I got BULLSHIDO ON TV!!!
"Bruce Lee sucks because I slammed my nuts with nunchucks trying to do that stupid **** back in the day. I still managed to have two kids. I forgive you Bruce." - by Vorpal

Many things we do naturally become difficult only when we try to make them intellectual subjects. It is possible to know so much about a subject that you become totally ignorant.
-Mentat Text Two (dicto)